An inquest into the death of a Red Arrows aerial display team pilot who died after he was ejected from his cockpit while on the ground is to begin today.
Flight Lieutenant Sean Cunningham, 35, was a highly-regarded and experienced pilot with the RAF's aerial display team but was fatally injured after being ejected from his Hawk T1 aircraft while on the ground at RAF Scampton, Lincolnshire, on November 8, 2011.
The parachute on the ejector seat did not deploy and the South African-born airman, who was also an Iraq war veteran, later died in hospital.
Following the incident, the RAF grounded all non-essential flying of aircraft fitted with the Mk10 Martin Baker-built ejector seat "as a precaution", but flights later resumed in December 2011, with air chiefs saying they had "no remaining safety concerns''.
Lincolnshire Police handed over a file concerning Flt Lt Cunningham's death, but the Crown Prosecution Service subsequently said no charges would be brought in relation to the incident.
Flt Lt Cunningham's sister, Nicolette Cunningham, paid tribute to her brother's talent as a pilot.
"Sean was an outstanding pilot who according to his superiors went beyond the call of duty whilst on operational tours in Iraq," she said.
"He had worked tirelessly to become a pilot and was extremely proud to be a member of the armed forces and honoured to protect his country."
Flt Lt Cunningham's family said they hoped the inquest, which is due to be held in Lincoln by Central Lincolnshire Coroner Stuart Fisher, will provide answers relating to the tragic incident.
Keith Barrett, a partner and serious injury expert at Irwin Mitchell representing the family, said: "Flt Lt Cunningham's family have been left devastated by their sudden and unexpected loss.
"They would like to thank the coroner for taking the time to investigate the circumstances surrounding Sean's death and hope the inquest will provide much-needed answers about what happened that day.
"Nothing will bring Sean back but it will give the family some comfort to know his death was investigated fully and that any lessons that can be learnt are taken on board to protect the safety of other service men and women in future."
The inquest is expected to last around three weeks.